package file;

import java.io.File;

public class MkDirDemo {
    public static void main(String[] args) {
        //File dir = new File("./test");
        File dir = new File("./a/b/c/d");
        if(dir.exists()){
            System.out.println("目录已存在");

        }else{
            dir.mkdirs();
            System.out.println("目录已创建");

        }
    }
}
